WTL is being with you for the epidemic

WTL is being with you for the epidemic

    Since the outbreak in Wuhan, our government has notified the epidemic information in a timely, transparent, open, and efficient manner. And in order to control the epidemic, prevent the spread of the virus, avoid the virus spread to more countries, our government has adopted effective measures say close the city and delay vacations. On the 9th, Feb, there was an inflection point in the number of confirmed cases and suspected cases, forming a reversal. We believe it can be completely controlled in the coming days.

                               Epidemic maps around the world                                                      China daily epidemic graph

     One of the manifestations of the new coronavirus is fever. Therefore, human body temperature monitoring is a main item for monitoring suspected cases. Portable infrared thermometers, which are medical devices, have been purchased up for a few days.

    As a result, manufacturers of infrared thermometers worked overtime urgently. Crystal oscillator is the main component of infrared thermometers. In order to support the control for epidemic, WTL shipped inventory products February 3rd to support customers fully, and organized some employees to start production for line TX3 -3225 on February 6th.

    How does a crystal oscillator work in an infrared thermometer? Let us explain it simply, MCU is the main control of infrared ray, which is similar to human brain. And crystal oscillator is to provide time base frequency for infrared ray, which is similar to human heart. Let us explain that with common MCU STC89C51 below.

    The overall design of the infrared thermometer is as follows:

    Infrared thermometer circuit diagram: (MCU STC89C51)

      Frequency range：2-48MHz， C3=C4<47 pF  

    Finally, let us summary how the infrared thermometer works. The crystal oscillator provides a reference clock frequency to the MCU STC89C5. The MCU STC89C51 processes the data transmitted by the infrared temperature measurement module and sends it to the LED display. Among our customers, TX3 3225 12MHz and TX3 3225 20MHz are priority choices. As for the external capacitor C3C4 and the CL value of crystal oscillator, the accurate matching can be provided by testing according to the circuit.

    In response to the needs of epidemic prevention and control equipment, if new customers and new manufacturers need to design and produce infrared thermometers, WTL provides circuit matching test for free, and gives priority to production meanwhile. WTL will see what WTL can do do to support you.

    WTL is a manufacturer of frequency components. Those components are widely used in consumer electronics, communications, smart wears, smart homes, medical equipment, automotive electronics and other fields.

    For more crystal information, please send email to [email protected]

    For technical support, please send email to [email protected]
    Facing with the epidemic, WTL is being with you.

    Let us pray for Wuhan, let us pray for China.

Author:Kavin, Translator: Kate

February 11，2020